U.S. patent application number 17/199584 was filed with the patent office on 2022-05-05 for camera lens group.
This patent application is currently assigned to ZHEJIANG SUNNY OPTICS CO., LTD.. The applicant listed for this patent is ZHEJIANG SUNNY OPTICS CO., LTD.. Invention is credited to Fujian DAI, Jianke WENREN, Liefeng ZHAO, Jin ZHOU.
Application Number | 20220137365 17/199584 |
Document ID | / |
Family ID | 1000005474453 |
Filed Date | 2022-05-05 |
United States Patent
Application |
20220137365 |
Kind Code |
A1 |
ZHOU; Jin ; et al. |
May 5, 2022 |
CAMERA LENS GROUP
Abstract
A camera lens group including, sequentially from an object side
to an image side along an optical axis, a first lens having
negative refractive power, a concave object-side surface and a
concave image-side surface; a second lens having refractive power,
a convex object-side surface and a concave image-side surface; a
third lens having positive refractive power, a convex object-side
surface and a convex image-side surface; a fourth lens having
refractive power; a fifth lens having positive refractive power and
a convex image-side surface; and a sixth lens having negative
refractive power, a convex object-side surface and a concave
image-side surface. Half of a field-of-view Semi-FOV of the camera
lens group and half of a diagonal length ImgH of an effective pixel
area on an imaging plane satisfy: 10.00
mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm. A maximum distortion of
the camera lens group is less than 3.50%.
Inventors: |
ZHOU; Jin; (Yuyao Zhejiang,
CN) ; WENREN; Jianke; (Yuyao Zhejiang, CN) ;
DAI; Fujian; (Yuyao Zhejiang, CN) ; ZHAO;
Liefeng; (Yuyao Zhejiang, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ZHEJIANG SUNNY OPTICS CO., LTD. |
Yuyao Zhejiang |
|
CN |
|
|
Assignee: |
ZHEJIANG SUNNY OPTICS CO.,
LTD.
Yuyao Zhejiang
CN
|
Family ID: |
1000005474453 |
Appl. No.: |
17/199584 |
Filed: |
March 12, 2021 |
Current U.S.
Class: |
359/713 |
Current CPC
Class: |
G02B 9/62 20130101; G02B
13/0045 20130101; G02B 27/0025 20130101 |
International
Class: |
G02B 13/00 20060101
G02B013/00; G02B 9/62 20060101 G02B009/62; G02B 27/00 20060101
G02B027/00 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 29, 2020 |
CN |
202011180546.1 |
Claims
1. A camera lens group, sequentially from an object side to an
image side of the camera lens group along an optical axis,
comprising: a first lens having negative refractive power, a
concave object-side surface and a concave image-side surface; a
second lens having refractive power, a convex object-side surface
and a concave image-side surface; a third lens having positive
refractive power, a convex object-side surface and a convex
image-side surface; a fourth lens having refractive power; a fifth
lens having positive refractive power and a convex image-side
surface; and a sixth lens having negative refractive power, a
convex object-side surface and a concave image-side surface,
wherein 10.00 mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm, where
Semi-FOV is half of a field-of-view of the camera lens group, and
ImgH is half of a diagonal length of an effective pixel area on an
imaging plane of the camera lens group; and a maximum distortion of
the camera lens group is less than 3.50%.
2. The camera lens group according to claim 1, wherein
TTL/ImgH<1.61, where TTL is a distance along the optical axis
from the object-side surface of the first lens to the imaging plane
of the camera lens group, and ImgH is half of the diagonal length
of the effective pixel area on the imaging plane.
3. The camera lens group according to claim 1, wherein
1.50<f1/f6<3.50, where f1 is an effective focal length of the
first lens, and f6 is an effective focal length of the sixth
lens.
4. The camera lens group according to claim 1, wherein
2.00<f34/BFL<6.00, where f34 is a combined focal length of
the third lens and the fourth lens, and BFL is a distance from the
image-side surface of the sixth lens to the imaging plane of the
camera lens group along the optical axis.
5. The camera lens group according to claim 1, wherein
2.00<R11/R12<5.00, where R11 is a radius of curvature of the
object-side surface of the sixth lens, and R12 is a radius of
curvature of the image-side surface of the sixth lens.
6. The camera lens group according to claim 1, wherein
1.00<R2/R3<2.50, where R2 is a radius of curvature of the
image-side surface of the first lens, and R3 is a radius of
curvature of the object-side surface of the second lens.
7. The camera lens group according to claim 1, wherein
29.00<CT5/T56<55.00, where CT5 is a center thickness of the
fifth lens along the optical axis, and T56 is a spaced interval
between the fifth lens and the sixth lens along the optical
axis.
8. The camera lens group according to claim 1, wherein
2.00<(CT3+CT1)/(CT3-CT1)<4.00, where CT1 is a center
thickness of the first lens along the optical axis, and CT3 is a
center thickness of the third lens along the optical axis.
9. The camera lens group according to claim 1, wherein
0.50<(SAG41+SAG42)/(SAG41-SAG42)<3.00, where SAG41 is an
on-axis distance from an intersection of an object-side surface of
the fourth lens and the optical axis to a vertex of an effective
radius of the object-side surface of the fourth lens, and SAG42 is
an on-axis distance from an intersection of an image-side surface
of the fourth lens and the optical axis to a vertex of an effective
radius of the image-side surface of the fourth lens.
10. The camera lens group according to claim 1, wherein
4.00<(DT61+DT62)/(DT62-DT61)<10.00, where DT61 is a maximum
effective radius of the object-side surface of the sixth lens, and
DT62 is a maximum effective radius of the image-side surface of the
sixth lens.
11. The camera lens group according to claim 1, wherein
3.00<ET6/ET2<6.00, where ET2 is an edge thickness of the
second lens, and ET6 is an edge thickness of the sixth lens.
12. A camera lens group, sequentially from an object side to an
image side of the camera lens group along an optical axis,
comprising: a first lens having negative refractive power, a
concave object-side surface and a concave image-side surface; a
second lens having refractive power, a convex object-side surface
and a concave image-side surface; a third lens having positive
refractive power, a convex object-side surface and a convex
image-side surface; a fourth lens having refractive power; a fifth
lens having positive refractive power and a convex image-side
surface; and a sixth lens having negative refractive power, a
convex object-side surface and a concave image-side surface,
wherein 2.00<(CT3+CT1)/(CT3-CT1)<4.00, where CT1 is a center
thickness of the first lens along the optical axis, and CT3 is a
center thickness of the third lens along the optical axis; and a
maximum distortion of the camera lens group is less than 3.50%.
13. The camera lens group according to claim 12, wherein
TTL/ImgH.ltoreq.1.61, where TTL is a distance along the optical
axis from the object-side surface of the first lens to an imaging
plane of the camera lens group, and ImgH is half of a diagonal
length of an effective pixel area on the imaging plane.
14. The camera lens group according to claim 12, wherein
1.50<f1/f6<3.50, where f1 is an effective focal length of the
first lens, and f6 is an effective focal length of the sixth
lens.
15. The camera lens group according to claim 12, wherein
2.00<f34/BFL<6.00, where f34 is a combined focal length of
the third lens and the fourth lens, and BFL is a distance from the
image-side surface of the sixth lens to an imaging plane of the
camera lens group along the optical axis.
16. The camera lens group according to claim 12, wherein
2.00<R11/R12<5.00, where R11 is a radius of curvature of the
object-side surface of the sixth lens, and R12 is a radius of
curvature of the image-side surface of the sixth lens.
17. The camera lens group according to claim 12, wherein
1.00<R2/R3<2.50, where R2 is a radius of curvature of the
image-side surface of the first lens, and R3 is a radius of
curvature of the object-side surface of the second lens.
18. The camera lens group according to claim 12, wherein
29.00<CT5/T56<55.00, where CT5 is a center thickness of the
fifth lens along the optical axis, and T56 is a spaced interval
between the fifth lens and the sixth lens along the optical
axis.
19. The camera lens group according to claim 18, wherein 10.00
mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm, where Semi-FOV is half
of a field-of-view of the camera lens group, and ImgH is half of a
diagonal length of an effective pixel area on an imaging plane of
the camera lens group.
20. The camera lens group according to claim 12, wherein
0.50<(SAG41+SAG42)/(SAG41-SAG42)<3.00, where SAG41 is an
on-axis distance from an intersection of an object-side surface of
the fourth lens and the optical axis to a vertex of an effective
radius of the object-side surface of the fourth lens, and SAG42 is
an on-axis distance from an intersection of an image-side surface
of the fourth lens and the optical axis to a vertex of an effective
radius of the image-side surface of the fourth lens.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims benefit of priority to Chinese
Patent Application No. 202011180546.1 filed on Oct. 29, 2020 before
the China National Intellectual Property Administration, the entire
disclosure of which is incorporated herein by reference in its
entity.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of optical
elements, and more specifically, relates to a camera lens
group.
BACKGROUND
[0003] With the rapid development of science and technology,
portable smart devices represented by mobile phones are becoming
more and more popular, and people's interest and demand for using
mobile phones to take photos or videos are also increasing. With
the continuous development of the lens assemblies applicable to the
mobile phone, it is an inevitable trend that high-quality camera
phones replace cameras.
[0004] One advantage of mobile phone over camera is that the lens
assembly applicable to the mobile phone has developed to
dual-camera, triple-camera, quad-camera or even five-camera, and
combined with algorithms to improve image quality. The current
mainstream lens assembly applicable to the mobile phone generally
includes large image plane lens assembly, telephoto lens assembly,
and wide-angle lens assembly. The wide-angle lens assembly has a
short focal length but a large viewing angle. At the same shooting
distance, the wide-angle lens assembly may capture a larger area of
the scene, but there is a relatively serious perspective
distortion, which increases the sense of the distance between the
front and back. Even if the auxiliary algorithm is corrected, it is
difficult to solve the distortion problem.
[0005] Therefore, it is still expected to better overcome the
problems existing in the original images captured by the
traditional wide-angle camera lens group.
SUMMARY
[0006] The present disclosure provides a camera lens group which
includes, sequentially from an object side to an image side along
an optical axis, a first lens having negative refractive power, a
concave object-side surface and a concave image-side surface; a
second lens having refractive power, a convex object-side surface
and a concave image-side surface; a third lens having positive
refractive power, a convex object-side surface and a convex
image-side surface; a fourth lens having refractive power; a fifth
lens having positive refractive power and a convex image-side
surface; and a sixth lens having negative refractive power, a
convex object-side surface and a concave image-side surface. Half
of a field-of-view Semi-FOV of the camera lens group and half of a
diagonal length ImgH of an effective pixel area on an imaging plane
of the camera lens group may satisfy: 10.00
mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm. A maximum distortion of
the camera lens group is less than 3.50%.
[0007] In one embodiment, at least one of the object-side surface
of the first lens to the image-side surface of the sixth lens is
aspheric.
[0008] In one embodiment, a distance TTL along the optical axis
from the object-side surface of the first lens to the imaging plane
of the camera lens group and half of the diagonal length ImgH of
the effective pixel area on the imaging plane may satisfy:
TTL/ImgH.ltoreq.1.61.
[0009] In one embodiment, an effective focal length f1 of the first
lens and an effective focal length f6 of the sixth lens may
satisfy: 1.50<f1/f6<3.50.
[0010] In one embodiment, a combined focal length f34 of the third
lens and the fourth lens and a distance BFL from the image-side
surface of the sixth lens to the imaging plane of the camera lens
group along the optical axis may satisfy:
2.00<f34/BFL<6.00.
[0011] In one embodiment, a radius of curvature R11 of the
object-side surface of the sixth lens and a radius of curvature R12
of the image-side surface of the sixth lens may satisfy:
2.00<R11/R12<5.00.
[0012] In one embodiment, a radius of curvature R2 of the
image-side surface of the first lens and a radius of curvature R3
of the object-side surface of the second lens may satisfy:
1.00<R2/R3<2.50.
[0013] In one embodiment, a center thickness CT5 of the fifth lens
along the optical axis and a spaced interval T56 between the fifth
lens and the sixth lens along the optical axis may satisfy:
29.00<CT5/T56<55.00.
[0014] In one embodiment, a center thickness CT1 of the first lens
along the optical axis and a center thickness CT3 of the third lens
along the optical axis may satisfy:
2.00<(CT3+CT1)/(CT3-CT1)<4.00.
[0015] In one embodiment, SAG41, being an on-axis distance from an
intersection of an object-side surface of the fourth lens and the
optical axis to a vertex of an effective radius of the object-side
surface of the fourth lens, and SAG42, being an on-axis distance
from an intersection of an image-side surface of the fourth lens
and the optical axis to a vertex of an effective radius of the
image-side surface of the fourth lens, may satisfy:
0.50<(SAG41+SAG42)/(SAG41-SAG42)<3.00.
[0016] In one embodiment, a maximum effective radius DT61 of the
object-side surface of the sixth lens and a maximum effective
radius DT62 of the image-side surface of the sixth lens may
satisfy: 4.00<(DT61+DT62)/(DT62-DT61)<10.00.
[0017] In one embodiment, an edge thickness ET2 of the second lens
and an edge thickness ET6 of the sixth lens may satisfy:
3.00<ET6/ET2<6.00.
[0018] In another aspect, the present disclosure provides a camera
lens group which includes, sequentially from an object side to an
image side along an optical axis, a first lens having negative
refractive power, a concave object-side surface and a concave
image-side surface; a second lens having refractive power, a convex
object-side surface and a concave image-side surface; a third lens
having positive refractive power, a convex object-side surface and
a convex image-side surface; a fourth lens having refractive power;
a fifth lens having positive refractive power and a convex
image-side surface; and a sixth lens having negative refractive
power, a convex object-side surface and a concave image-side
surface. A center thickness CT1 of the first lens along the optical
axis and a center thickness CT3 of the third lens along the optical
axis may satisfy: 2.00<(CT3+CT1)/(CT3-CT1)<4.00. A maximum
distortion of the camera lens group is less than 3.50%.
[0019] In one embodiment, a distance TTL along the optical axis
from the object-side surface of the first lens to an imaging plane
of the camera lens group and half of a diagonal length ImgH of an
effective pixel area on the imaging plane may satisfy:
TTL/ImgH.ltoreq.1.61.
[0020] In one embodiment, an effective focal length f1 of the first
lens and an effective focal length f6 of the sixth lens may
satisfy: 1.50<f1/f6<3.50.
[0021] In one embodiment, a combined focal length f34 of the third
lens and the fourth lens and a distance BFL from the image-side
surface of the sixth lens to an imaging plane of the camera lens
group along the optical axis may satisfy:
2.00<f34/BFL<6.00.
[0022] In one embodiment, a radius of curvature R11 of the
object-side surface of the sixth lens and a radius of curvature R12
of the image-side surface of the sixth lens may satisfy:
2.00<R11/R12<5.00.
[0023] In one embodiment, a radius of curvature R2 of the
image-side surface of the first lens and a radius of curvature R3
of the object-side surface of the second lens may satisfy:
1.00<R2/R3<2.50.
[0024] In one embodiment, a center thickness CT5 of the fifth lens
along the optical axis and a spaced interval T56 between the fifth
lens and the sixth lens along the optical axis may satisfy:
29.00<CT5/T56<55.00.
[0025] In one embodiment, half of a field-of-view Semi-FOV of the
camera lens group and half of a diagonal length ImgH of an
effective pixel area on an imaging plane of the camera lens group
may satisfy: 10.00 mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm.
[0026] In one embodiment, SAG41, being an on-axis distance from an
intersection of an object-side surface of the fourth lens and the
optical axis to a vertex of an effective radius of the object-side
surface of the fourth lens, and SAG42, being an on-axis distance
from an intersection of an image-side surface of the fourth lens
and the optical axis to a vertex of an effective radius of the
image-side surface of the fourth lens, may satisfy:
0.50<(SAG41+SAG42)/(SAG41-SAG42)<3.00.
[0027] In one embodiment, a maximum effective radius DT61 of the
object-side surface of the sixth lens and a maximum effective
radius DT62 of the image-side surface of the sixth lens may
satisfy: 4.00<(DT61+DT62)/(DT62-DT61)<10.00.
[0028] In one embodiment, an edge thickness ET2 of the second lens
and an edge thickness ET6 of the sixth lens may satisfy:
3.00<ET6/ET2<6.00.
[0029] The present disclosure employs six lenses, and the camera
lens group has at least one beneficial effect, such as
miniaturization, wide-angle, small distortion, and good image
quality and the like, by rationally configuring the refractive
power, the surface shape, the center thickness of each lens, and
the on-axis spaced interval between the lenses and the like.
BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Other features, objects, and advantages of the present
disclosure will become more apparent from the following detailed
description of the non-limiting embodiments with reference to the
accompanying drawings. In the drawings:
[0031] FIG. 1 illustrates a schematic structural view of a camera
lens group according to example 1 of the present disclosure; and
FIGS. 2A to 2D illustrate longitudinal aberration curves, a lateral
color curve, astigmatic curves, and a distortion curve of the
camera lens group of the example 1, respectively.
[0032] FIG. 3 illustrates a schematic structural view of a camera
lens group according to example 2 of the present disclosure; and
FIGS. 4A to 4D illustrate longitudinal aberration curves, a lateral
color curve, astigmatic curves, and a distortion curve of the
camera lens group of the example 2, respectively.
[0033] FIG. 5 illustrates a schematic structural view of a camera
lens group according to example 3 of the present disclosure; and
FIGS. 6A to 6D illustrate longitudinal aberration curves, a lateral
color curve, astigmatic curves, and a distortion curve of the
camera lens group of the example 3, respectively.
[0034] FIG. 7 illustrates a schematic structural view of a camera
lens group according to example 4 of the present disclosure; and
FIGS. 8A to 8D illustrate longitudinal aberration curves, a lateral
color curve, astigmatic curves, and a distortion curve of the
camera lens group of the example 4, respectively.
[0035] FIG. 9 illustrates a schematic structural view of a camera
lens group according to example 5 of the present disclosure; and
FIGS. 10A to 10D illustrate longitudinal aberration curves, a
lateral color curve, astigmatic curves, and a distortion curve of
the camera lens group of the example 5, respectively.
[0036] FIG. 11 illustrates a schematic structural view of a camera
lens group according to example 6 of the present disclosure; and
FIGS. 12A to 12D illustrate longitudinal aberration curves, a
lateral color curve, astigmatic curves, and a distortion curve of
the camera lens group of the example 6, respectively.
DETAILED DESCRIPTION OF EMBODIMENTS
[0037] For a better understanding of the present disclosure,
various aspects of the present disclosure will be described in more
detail with reference to the accompanying drawings. It should be
understood that the detailed description is merely illustrative of
the exemplary embodiments of the present disclosure and is not
intended to limit the scope of the present disclosure in any way.
Throughout the specification, the same reference numerals refer to
the same elements. The expression "and/or" includes any and all
combinations of one or more of the associated listed items.
[0038] It should be noted that in the present specification, the
expressions such as first, second, third are used merely for
distinguishing one feature from another, without indicating any
limitation on the features. Thus, a first lens discussed below may
also be referred to as a second lens or a third lens without
departing from the teachings of the present disclosure.
[0039] In the accompanying drawings, the thickness, size and shape
of the lens have been somewhat exaggerated for the convenience of
explanation. In particular, shapes of spherical surfaces or
aspheric surfaces shown in the accompanying drawings are shown by
way of example. That is, shapes of the spherical surfaces or the
aspheric surfaces are not limited to the shapes of the spherical
surfaces or the aspheric surfaces shown in the accompanying
drawings. The accompanying drawings are merely illustrative and not
strictly drawn to scale.
[0040] Herein, the paraxial area refers to an area near the optical
axis. If a surface of a lens is convex and the position of the
convex is not defined, it indicates that the surface of the lens is
convex at least in the paraxial region; and if a surface of a lens
is concave and the position of the concave is not defined, it
indicates that the surface of the lens is concave at least in the
paraxial region. In each lens, the surface closest to the object is
referred to as an object-side surface of the lens, and the surface
closest to the imaging plane is referred to as an image-side
surface of the lens.
[0041] It should be further understood that the terms "comprising,"
"including," "having," "containing" and/or "contain," when used in
the specification, specify the presence of stated features,
elements and/or components, but do not exclude the presence or
addition of one or more other features, elements, components and/or
combinations thereof. In addition, expressions, such as "at least
one of," when preceding a list of features, modify the entire list
of features rather than an individual element in the list. Further,
the use of "may," when describing embodiments of the present
disclosure, refers to "one or more embodiments of the present
disclosure." Also, the term "exemplary" is intended to refer to an
example or illustration.
[0042] Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meaning as commonly
understood by those of ordinary skill in the art to which the
present disclosure belongs. It will be further understood that
terms, such as those defined in commonly used dictionaries, should
be interpreted as having a meaning that is consistent with the
meaning in the context of the relevant art and will not be
interpreted in an idealized or overly formal sense, unless
expressly so defined herein.
[0043] It should also be noted that, the examples in the present
disclosure and the features in the examples may be combined with
each other on a non-conflict basis. The present disclosure will be
described in detail below with reference to the accompanying
drawings and in combination with the examples.
[0044] The features, principles, and other aspects of the present
disclosure are described in detail below.
[0045] A camera lens group according to an exemplary embodiment of
the present disclosure may include, for example, six lenses having
refractive power, that is, a first lens, a second lens, a third
lens, a fourth lens, a fifth lens and a sixth lens. The six lenses
are arranged sequentially from an object side to an image side
along an optical axis. Among the first lens to the sixth lens,
there may be an air interval between each two adjacent lenses.
[0046] In an exemplary embodiment, the first lens may have negative
refractive power, an object-side surface thereof may be concave,
and an image-side surface thereof may be concave. The second lens
may have positive or negative refractive power, an object-side
surface thereof may be convex, and an image-side surface thereof
may be concave. The third lens may have positive refractive power,
an object-side surface thereof may be convex, and an image-side
surface thereof may be convex. The fourth lens may have positive or
negative refractive power. The fifth lens may have positive
refractive power, and an image-side surface thereof may be convex.
The sixth lens may have negative refractive power, an object-side
surface thereof may be convex, and an image-side surface thereof
may be concave. By reasonably controlling the refractive power and
surface curvature of each lens of the camera lens group, the
aberration of the camera lens group may be effectively
compensated.
[0047] In an exemplary embodiment, a maximum distortion of the
camera lens group of the present disclosure is less than 3.50%. The
camera lens group of the present disclosure has small distortion,
and the image quality of the camera lens group is high. The image
formed by the camera lens group is close to the real scene.
[0048] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 10.00
mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm, where Semi-FOV is half
of a field-of-view of the camera lens group, and ImgH is half of a
diagonal length of an effective pixel area on an imaging plane of
the camera lens group. When the camera lens group satisfies 10.00
mm<tan.sup.2(Semi-FOV)*ImgH<23.50 mm, a relatively large
field-of-view may be obtained, so that the camera lens group has a
relatively wide imaging range. More specifically, Semi-FOV and ImgH
may satisfy: 10.05 mm<tan.sup.2(Semi-FOV)*ImgH<23.10 mm.
[0049] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: TTL/ImgH.ltoreq.1.61, where
TTL is a distance along the optical axis from the object-side
surface of the first lens to an imaging plane of the camera lens
group, and ImgH is half of a diagonal length of an effective pixel
area on the imaging plane. The camera lens group satisfies
TTL/ImgH.ltoreq.1.61, which may reduce the overall length of the
camera lens group to achieve ultra-thin characteristics. The camera
lens group may be applied to various electronic devices that have a
tendency to become thinner. More specifically, TTL and ImgH may
satisfy: 1.50.ltoreq.TTL/ImgH.ltoreq.1.61.
[0050] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 1.50<f1/f6<3.50, where
f1 is an effective focal length of the first lens, and f6 is an
effective focal length of the sixth lens. On the one hand, if the
ratio of the effective focal lengths of the first lens and the
sixth lens satisfies the expression, it is beneficial to reduce the
sensitivity of the two lenses, thereby making the camera lens
assembly more stable in use. On the other hand, it is beneficial to
control the contribution of the two lenses to the aberration within
a reasonable range, so as to correct the aberration of the camera
lens group, thereby making the camera lens group have high image
quality. In addition, it may make the two lenses easier to process.
More specifically, f1 and f6 may satisfy:
1.80<f1/f6<3.10.
[0051] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 2.00<f34/BFL<6.00,
where f34 is a combined focal length of the third lens and the
fourth lens, and BFL is a distance from the image-side surface of
the sixth lens to an imaging plane of the camera lens group along
the optical axis. The camera lens group satisfies
2.00<f34/BFL<6.00, which may make the camera lens group have
good processability, and at the same time ensure the camera lens
group have better image quality. More specifically, f34 and BFL may
satisfy: 2.50<f34/BFL<5.80.
[0052] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 2.00<R11/R12<5.00,
where R11 is a radius of curvature of the object-side surface of
the sixth lens, and R12 is a radius of curvature of the image-side
surface of the sixth lens. The camera lens group satisfies
2.00<R11/R12<5.00. On the one hand, the formation of image
blur is avoided, so that the camera lens group may obtain higher
image quality. On the other hand, satisfying the above conditional
expression may avoid welding marks formed on the sixth lens when
molding the sixth lens, thereby ensuring that the sixth lens may be
molded into a large-diameter lens. More specifically, R11 and R12
may satisfy: 2.30<R11/R12<4.50.
[0053] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 1.00<R2/R3<2.50, where
R2 is a radius of curvature of the image-side surface of the first
lens, and R3 is a radius of curvature of the object-side surface of
the second lens. When the camera lens group satisfies
1.00<R2/R3<2.50, the aberration contributed by the first lens
and the aberration contributed by the second lens may compensate
with each other, thereby correcting the chromatic aberration of the
camera lens group and improving the image quality. More
specifically, R2 and R3 may satisfy: 1.40<R2/R3<2.25.
[0054] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 29.00<CT5/T56<55.00,
where CT5 is a center thickness of the fifth lens along the optical
axis, and T56 is a spaced interval between the fifth lens and the
sixth lens along the optical axis. When the camera lens group
satisfies 29.00<CT5/T56<55.00, the positions of the fourth
lens, the fifth lens and the sixth lens along the optical axis may
be reasonably adjusted and the structure of the fifth lens may be
controlled, which is beneficial to avoiding ghosting caused by
reflection between the three lenses and avoiding ghosting caused by
secondary reflection of the fifth lens. More specifically, CT5 and
T56 may satisfy: 29.70<CT5/T56<54.80.
[0055] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy:
2.00<(CT3+CT1)/(CT3-CT1)<4.00, where CT1 is a center
thickness of the first lens along the optical axis, and CT3 is a
center thickness of the third lens along the optical axis. The
camera lens group satisfies 2.00<(CT3+CT1)/(CT3-CT1)<4.00. On
the one hand, the good processability of the camera lens group may
be ensured. On the other hand, the aberration contributed by the
first lens and the aberration contributed by the third lens may be
compensated with each other to improve the image quality of the
camera lens group. More specifically, CT1 and CT3 may satisfy:
2.70<(CT3+CT1)/(CT3-CT1)<3.70.
[0056] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy:
0.50<(SAG41+SAG42)/(SAG41-SAG42)<3.00, where SAG41 is an
on-axis distance from an intersection of an object-side surface of
the fourth lens and the optical axis to a vertex of an effective
radius of the object-side surface of the fourth lens, and SAG42 is
an on-axis distance from an intersection of an image-side surface
of the fourth lens and the optical axis to a vertex of an effective
radius of the image-side surface of the fourth lens. The camera
lens group satisfies 0.50<(SAG41+SAG42)/(SAG41-SAG42)<3.00,
which is beneficial to controlling the curvature of the fourth lens
to ensure that the fourth lens has good processability. More
specifically, SAG41 and SAG42 may satisfy:
0.70<(SAG41+SAG42)/(SAG41-SAG42)<2.50.
[0057] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy:
4.00<(DT61+DT62)/(DT62-DT61)<10.00, where DT61 is a maximum
effective radius of the object-side surface of the sixth lens, and
DT62 is a maximum effective radius of the image-side surface of the
sixth lens. The camera lens group satisfies
4.00<(DT61+DT62)/(DT62-DT61)<10.00. On the one hand, the
light inclination may be controlled to make the camera lens group
and the imaging chip more matched. On the other hand, it is
beneficial to ensure the processability of the sixth lens. More
specifically, DT61 and DT62 may satisfy:
4.90<(DT61+DT62)/(DT62-DT61)<9.40.
[0058] In an exemplary embodiment, the camera lens group according
to the present disclosure may satisfy: 3.00<ET6/ET2<6.00,
where ET2 is an edge thickness of the second lens, and ET6 is an
edge thickness of the sixth lens. The camera lens group satisfies
3.00<ET6/ET2<6.00, which may improve assembly stability of
the camera lens group while making the refractive power more
reasonably assigned to each lens. More specifically, ET2 and ET6
may satisfy: 3.25<ET6/ET2<5.50.
[0059] In an exemplary embodiment, the above camera lens group may
further include at least one stop. The stop may be disposed at an
appropriate position as required, for example, between the first
lens and the second lens. Optionally, the above camera lens group
may further include an optical filter for correcting the color
deviation and/or a protective glass for protecting the
photosensitive element located on an imaging plane.
[0060] The camera lens group according to the above embodiments of
the present disclosure may employ a plurality of lenses, such as
six lenses as described above. By properly configuring the
refractive power of each lens, the surface shape, the center
thickness of each lens, and spaced intervals along the optical axis
between the lenses, the size and the sensitivity of the camera lens
group may be effectively reduced, and the workability of the camera
lens group may be improved, such that the camera lens group is more
advantageous for production processing and may be applied to
portable electronic products. At the same time, the camera lens
group of the present disclosure also has excellent optical
performance, such as wide angle, small distortion, high image
quality and low ghost image intensity.
[0061] In the embodiments of the present disclosure, at least one
of the surfaces of the lenses is aspheric, that is, at least one of
the object-side surface of the first lens to the image-side surface
of the sixth lens is aspheric. The aspheric lens is characterized
by a continuous change in curvature from the center of the lens to
the periphery of the lens. Unlike a spherical lens having a
constant curvature from the center of the lens to the periphery of
the lens, the aspheric lens has a better curvature radius
characteristic, and has the advantages of improving distortion
aberration and improving astigmatic aberration. With aspheric lens,
the aberrations that occur during imaging may be eliminated as much
as possible, and thus improving the image quality. Optionally, at
least one of the object-side surface and the image-side surface of
each of the first lens, the second lens, the third lens, the fourth
lens, the fifth lens and the sixth lens is aspheric. Optionally,
the object-side surface and the image-side surface of each of the
first lens, the second lens, the third lens, the fourth lens, the
fifth lens and the sixth lens are aspheric.
[0062] However, it will be understood by those skilled in the art
that the number of lenses constituting the camera lens group may be
varied to achieve the various results and advantages described in
this specification without departing from the technical solution
claimed by the present disclosure. For example, although the
embodiment is described by taking six lenses as an example, the
camera lens group is not limited to include six lenses. The camera
lens group may also include other numbers of lenses if desired.
[0063] Some specific examples of a camera lens group applicable to
the above embodiment will be further described below with reference
to the accompanying drawings.
EXAMPLE 1
[0064] A camera lens group according to example 1 of the present
disclosure is described below with reference to FIG. 1 to FIG. 2D.
FIG. 1 shows a schematic structural view of the camera lens group
according to example 1 of the present disclosure.
[0065] As shown in FIG. 1, the camera lens group includes a first
lens E1, a second lens E2, a stop STO, a third lens E3, a fourth
lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7,
which are sequentially arranged from an object side to an image
side along an optical axis.
[0066] The first lens E1 has negative refractive power, an
object-side surface S1 thereof is concave, and an image-side
surface S2 thereof is concave. The second lens E2 has positive
refractive power, an object-side surface S3 thereof is convex, and
an image-side surface S4 thereof is concave. The third lens E3 has
positive refractive power, an object-side surface S5 thereof is
convex, and an image-side surface S6 thereof is convex. The fourth
lens E4 has negative refractive power, an object-side surface S7
thereof is concave, and an image-side surface S8 thereof is
concave. The fifth lens E5 has positive refractive power, an
object-side surface S9 thereof is concave, and an image-side
surface S10 thereof is convex. The sixth lens E6 has negative
refractive power, an object-side surface S11 thereof is convex, and
an image-side surface S12 thereof is concave. The optical filter E7
has an object-side surface S13 and an image-side surface S14. The
camera lens group has an imaging plane S15, and light from an
object sequentially passes through the respective surfaces S1 to
S14 and is finally imaged on the imaging plane S15.
[0067] Table 1 is a table illustrating basic parameters of the
camera lens group of example 1, wherein the units for the radius of
curvature, the thickness/distance and the focal length are
millimeter (mm).
TABLE-US-00001 TABLE 1 Material Surface Surface Radius of
Thickness/ Refractive Abbe Focal Conic number type curvature
Distance index number length coefficient OBJ Spherical Infinite
Infinite S1 Aspheric -5.8164 0.3303 1.55 56.1 -4.76 -88.6095 S2
Aspheric 4.7851 0.7454 -1.0000 S3 Aspheric 2.7178 0.2800 1.62 25.9
8.08 -7.9899 S4 Aspheric 5.7125 0.1155 -9.6591 STO Spherical
Infinite 0.0375 S5 Aspheric 7.1059 0.5787 1.55 56.1 3.38 -6.9751 S6
Aspheric -2.4184 0.3595 2.2299 S7 Aspheric -9.1399 0.2800 1.67 19.2
-4.83 86.8527 S8 Aspheric 5.1543 0.1000 -17.1956 S9 Aspheric
-58.8472 1.4808 1.55 56.1 1.64 90.0000 S10 Aspheric -0.8909 0.0300
-1.3998 S11 Aspheric 1.6303 0.5000 1.65 21.5 -2.39 -11.6012 S12
Aspheric 0.7029 0.6844 -3.9428 S13 Spherical Infinite 0.2100 1.52
64.2 S14 Spherical Infinite 0.5649 S15 Spherical Infinite
[0068] In example 1, a total effective focal length f of the camera
lens group is 2.26 mm, an aperture number Fno of the camera lens
group is 2.40, a distance TTL along the optical axis from the
object-side surface S1 of the first lens E1 to the imaging plane
S15 is 6.30 mm, half of a diagonal length ImgH of an effective
pixel area on the imaging plane S15 is 4.20 mm, and half of a
maximum field-of-view Semi-FOV is 66.5.degree..
[0069] In example 1, the object-side surface and the image-side
surface of any one of the first lens E1 to the sixth lens E6 are
aspheric. The surface shape x of each aspheric lens may be defined
by using, but not limited to, the following aspheric formula:
x = ch 2 1 + 1 - ( k + 1 ) .times. c 2 .times. h 2 + .SIGMA.
.times. .times. Aih i ( 1 ) ##EQU00001##
[0070] Where, x is the sag--the axis-component of the displacement
of the surface from the aspheric vertex, when the surface is at
height h from the optical axis; c is a paraxial curvature of the
aspheric surface, c=1/R (that is, the paraxial curvature c is
reciprocal of the radius of curvature R in the above Table 1); k is
a conic coefficient; Ai is a correction coefficient for the i-th
order of the aspheric surface. Table 2 below shows high-order
coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 applicable
to each aspheric surface S1 to S12 in example 1.
TABLE-US-00002 TABLE 2 Surface number A4 A6 A8 A10 A12 A14 A16 A18
A20 S1 1.5734E-01 -1.0952E-01 5.9866E-02 -2.3660E-02 6.4309E-03
-1.1665E-03 1.3431E-04 -8.8585E-06 2.5485E-07 S2 2.3530E-01
-1.0090E-01 -5.5951E-02 1.6329E-01 -1.5292E-01 7.4148E-02
-1.9887E-02 2.8153E-03 -1.6503E-04 S3 -2.2747E-02 -2.9788E-02
-5.8537E-01 2.5422E+00 -6.6826E+00 1.1290E+01 -1.1401E+01
6.2786E+00 -1.4599E+00 S4 -1.4354E-02 -1.4699E-01 7.0697E-01
-3.0205E+00 8.4231E+00 -1.1125E+01 3.0493E+00 7.9488E+00
-6.1691E+00 S5 6.8304E-03 -7.0059E-02 5.6624E-01 -4.0439E+00
1.6241E+01 -3.9314E+01 5.0603E+01 -2.7011E+01 0.0000E+00 S6
-1.1394E-01 1.5283E-02 -4.5680E-01 2.5148E+00 -1.0169E+01
2.5451E+01 -3.8710E+01 3.2453E+01 -1.1645E+01 S7 -3.5823E-01
3.6781E-01 -1.5343E+00 4.8385E+00 -1.0670E+01 1.4369E+01
-1.0625E+01 3.2918E+00 0.0000E+00 S8 -2.4024E-01 1.6221E-01
-9.0163E-03 -1.2059E-01 1.4665E-01 -8.5558E-02 2.5635E-02
-3.0959E-03 0.0000E+00 S9 -1.3950E-02 -1.6288E-01 4.2771E-01
-5.3407E-01 4.0444E-01 -1.9531E-01 5.9088E-02 -1.0237E-02
7.7561E-04 S10 1.7505E-01 -2.9369E-01 3.1338E-01 -2.5601E-01
1.5286E-01 -6.1505E-02 1.5601E-02 -2.2361E-03 1.3711E-04 S11
-3.2607E-03 -3.9649E-02 2.5419E-02 -8.2067E-03 1.5408E-03
-1.7173E-04 1.0923E-05 -3.4484E-07 3.3992E-09 S12 -3.8611E-02
6.2302E-03 1.0561E-04 -2.4860E-04 4.5451E-05 -3.8879E-06 1.6020E-07
-1.9850E-09 -3.4017E-11
[0071] FIG. 2A illustrates longitudinal aberration curves of the
camera lens group according to example 1, representing the
deviations of focal points converged by light of different
wavelengths after passing through the lens group. FIG. 2B
illustrates a lateral color curve of the camera lens group
according to example 1, representing the deviations of different
image heights on an imaging plane after light passes through the
lens group. FIG. 2C illustrates astigmatic curves of the camera
lens group according to example 1, representing the curvatures of a
tangential plane and the curvatures of a sagittal plane. FIG. 2D
illustrates a distortion curve of the camera lens group according
to example 1, representing the amounts of distortion corresponding
to different image heights. It can be seen from FIG. 2A to FIG. 2D
that the camera lens group provided in example 1 may achieve good
image quality.
EXAMPLE 2
[0072] A camera lens group according to example 2 of the present
disclosure is described below with reference to FIG. 3 to FIG. 4D.
In this example and the following examples, for the purpose of
brevity, the description of parts similar to those in example 1
will be omitted. FIG. 3 shows a schematic structural view of the
camera lens group according to example 2 of the present
disclosure.
[0073] As shown in FIG. 3, the camera lens group includes a first
lens E1, a second lens E2, a stop STO, a third lens E3, a fourth
lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7,
which are sequentially arranged from an object side to an image
side along an optical axis.
[0074] The first lens E1 has negative refractive power, an
object-side surface S1 thereof is concave, and an image-side
surface S2 thereof is concave. The second lens E2 has positive
refractive power, an object-side surface S3 thereof is convex, and
an image-side surface S4 thereof is concave. The third lens E3 has
positive refractive power, an object-side surface S5 thereof is
convex, and an image-side surface S6 thereof is convex. The fourth
lens E4 has negative refractive power, an object-side surface S7
thereof is concave, and an image-side surface S8 thereof is
concave. The fifth lens E5 has positive refractive power, an
object-side surface S9 thereof is convex, and an image-side surface
S10 thereof is convex. The sixth lens E6 has negative refractive
power, an object-side surface S 11 thereof is convex, and an
image-side surface S12 thereof is concave. The optical filter E7
has an object-side surface S13 and an image-side surface S14. The
camera lens group has an imaging plane S15, and light from an
object sequentially passes through the respective surfaces S1 to
S14 and is finally imaged on the imaging plane S15.
[0075] In example 2, a total effective focal length f of the camera
lens group is 2.28 mm, an aperture number Fno of the camera lens
group is 2.21, a distance TTL along the optical axis from the
object-side surface S1 of the first lens E1 to the imaging plane
S15 is 6.66 mm, half of a diagonal length ImgH of an effective
pixel area on the imaging plane S15 is 4.20 mm, and half of a
maximum field-of-view Semi-FOV is 66.0.degree..
[0076] Table 3 is a table illustrating basic parameters of the
camera lens group of example 2, wherein the units for the radius of
curvature, the thickness/distance and the focal length are
millimeter (mm). Table 4 shows high-order coefficients applicable
to each aspheric surface in example 2, wherein the surface shape of
each aspheric surface may be defined by the formula (1) given in
the above example 1.
TABLE-US-00003 TABLE 3 Material Surface Surface Radius of
Thickness/ Refractive Abbe Focal Conic number type curvature
Distance index number length coefficient OBJ Spherical Infinite
Infinite S1 Aspheric -5.9962 0.3641 1.55 56.1 -4.41 -90.0000 S2
Aspheric 4.1089 0.8266 -1.0000 S3 Aspheric 2.7886 0.2800 1.62 25.9
7.47 -6.5664 S4 Aspheric 6.7441 0.1511 -36.6688 STO Spherical
Infinite 0.0282 S5 Aspheric 5.6475 0.6628 1.55 56.1 3.61 9.0356 S6
Aspheric -2.9074 0.3661 0.2694 S7 Aspheric -39.9687 0.2800 1.67
19.2 -5.12 34.7425 S8 Aspheric 3.8128 0.1000 -24.6884 S9 Aspheric
140.0905 1.5871 1.55 56.1 1.66 -90.0000 S10 Aspheric -0.9066 0.0300
-1.4265 S11 Aspheric 1.7260 0.5000 1.65 21.5 -2.40 -14.5862 S12
Aspheric 0.7292 0.7049 -4.2299 S13 Spherical Infinite 0.2100 1.52
64.2 S14 Spherical Infinite 0.5648 S15 Spherical Infinite
TABLE-US-00004 TABLE 4 Surface number A4 A6 A8 A10 A12 A14 A16 A18
A20 S1 1.3053E-01 -8.2904E-02 4.0334E-02 -1.4200E-02 3.4605E-03
-5.6660E-04 5.9426E-05 -3.6100E-06 9.6683E-08 S2 2.0359E-01
-7.3308E-02 -5.1449E-02 1.1765E-01 -9.7312E-02 4.2284E-02
-1.0206E-02 1.3021E-03 -6.8823E-05 S3 -1.9366E-02 -3.9113E-02
-2.6101E-01 8.1552E-01 -1.6890E+00 2.3788E+00 -1.9536E+00
8.4392E-01 -1.4952E-01 S4 -2.4776E-03 -1.1831E-01 3.6879E-01
-1.5315E+00 4.2764E+00 -6.8273E+00 6.4964E+00 -3.4333E+00
7.8616E-01 S5 1.3456E-02 -7.3764E-02 8.0322E-01 -4.9028E+00
1.6650E+01 -3.2480E+01 3.3557E+01 -1.4279E+01 0.0000E+00 S6
-1.0039E-01 -5.2865E-02 4.6139E-01 -2.5347E+00 7.2443E+00
-1.2404E+01 1.2527E+01 -6.8639E+00 1.5441E+00 S7 -3.6156E-01
2.4916E-01 -5.8963E-01 8.6731E-01 -1.1710E+00 1.1514E+00
-7.1599E-01 2.0785E-01 0.0000E+00 S8 -2.3514E-01 2.3998E-01
-2.3127E-01 1.7896E-01 -1.0380E-01 4.1598E-02 -9.2823E-03
8.0760E-04 0.0000E+00 S9 -4.7165E-02 -2.8708E-02 1.8589E-01
-2.6960E-01 2.1198E-01 -1.0201E-01 3.0112E-02 -5.0122E-03
3.6027E-04 S10 1.7016E-01 -2.5492E-01 2.2600E-01 -1.4357E-01
6.4033E-02 -1.8499E-02 3.1985E-03 -2.9328E-04 1.0647E-05 S11
1.9827E-02 -5.0961E-02 2.8064E-02 -8.4312E-03 1.4816E-03
-1.4734E-04 6.7219E-06 2.2451E-08 -9.3918E-09 S12 -1.9569E-02
-5.9267E-03 4.8249E-03 -1.4489E-03 2.4669E-04 -2.5778E-05
1.6407E-06 -5.8518E-08 8.9764E-10
[0077] FIG. 4A illustrates longitudinal aberration curves of the
camera lens group according to example 2, representing the
deviations of focal points converged by light of different
wavelengths after passing through the lens group. FIG. 4B
illustrates a lateral color curve of the camera lens group
according to example 2, representing the deviations of different
image heights on an imaging plane after light passes through the
lens group. FIG. 4C illustrates astigmatic curves of the camera
lens group according to example 2, representing the curvatures of a
tangential plane and the curvatures of a sagittal plane. FIG. 4D
illustrates a distortion curve of the camera lens group according
to example 2, representing the amounts of distortion corresponding
to different image heights. It can be seen from FIG. 4A to FIG. 4D
that the camera lens group provided in example 2 may achieve good
image quality.
EXAMPLE 3
[0078] A camera lens group according to example 3 of the present
disclosure is described below with reference to FIG. 5 to FIG. 6D.
FIG. 5 shows a schematic structural view of the camera lens group
according to example 3 of the present disclosure.
[0079] As shown in FIG. 5, the camera lens group includes a first
lens E1, a second lens E2, a stop STO, a third lens E3, a fourth
lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7,
which are sequentially arranged from an object side to an image
side along an optical axis.
[0080] The first lens E1 has negative refractive power, an
object-side surface S1 thereof is concave, and an image-side
surface S2 thereof is concave. The second lens E2 has positive
refractive power, an object-side surface S3 thereof is convex, and
an image-side surface S4 thereof is concave. The third lens E3 has
positive refractive power, an object-side surface S5 thereof is
convex, and an image-side surface S6 thereof is convex. The fourth
lens E4 has negative refractive power, an object-side surface S7
thereof is convex, and an image-side surface S8 thereof is concave.
The fifth lens E5 has positive refractive power, an object-side
surface S9 thereof is convex, and an image-side surface S10 thereof
is convex. The sixth lens E6 has negative refractive power, an
object-side surface S 11 thereof is convex, and an image-side
surface S12 thereof is concave. The optical filter E7 has an
object-side surface S13 and an image-side surface S14. The camera
lens group has an imaging plane S15, and light from an object
sequentially passes through the respective surfaces S1 to S14 and
is finally imaged on the imaging plane S15.
[0081] In example 3, a total effective focal length f of the camera
lens group is 2.24 mm, an aperture number Fno of the camera lens
group is 2.40, a distance TTL along the optical axis from the
object-side surface S1 of the first lens E1 to the imaging plane
S15 is 6.76 mm, half of a diagonal length ImgH of an effective
pixel area on the imaging plane S15 is 4.20 mm, and half of a
maximum field-of-view Semi-FOV is 66.9.degree..
[0082] Table 5 is a table illustrating basic parameters of the
camera lens group of example 3, wherein the units for the radius of
curvature, the thickness/distance and the focal length are
millimeter (mm). Table 6 shows high-order coefficients applicable
to each aspheric surface in example 3, wherein the surface shape of
each aspheric surface may be defined by the formula (1) given in
the above example 1.
TABLE-US-00005 TABLE 5 Material Surface Surface Radius of
Thickness/ Refractive Abbe Focal Conic number type curvature
Distance index number length coefficient OBJ Spherical Infinite
Infinite S1 Aspheric -6.4874 0.3626 1.55 56.1 -4.08 -90.0000 S2
Aspheric 3.4578 0.8766 -1.0000 S3 Aspheric 2.9001 0.2800 1.62 25.9
8.99 -6.2975 S4 Aspheric 5.8269 0.1513 -16.2827 STO Spherical
Infinite 0.0641 S5 Aspheric 4.9400 0.6913 1.55 56.1 3.18 0.0682 S6
Aspheric -2.5400 0.3872 0.7062 S7 Aspheric 32.9219 0.2800 1.67 19.2
-5.15 -90.0000 S8 Aspheric 3.1426 0.1000 -16.4395 S9 Aspheric
24.6047 1.6434 1.55 56.1 1.64 -90.0000 S10 Aspheric -0.9076 0.0300
-1.4433 S11 Aspheric 1.8363 0.5000 1.65 21.5 -2.21 -19.9031 S12
Aspheric 0.7228 0.6632 -4.4479 S13 Spherical Infinite 0.2100 1.52
64.2 S14 Spherical Infinite 0.5231 S15 Spherical Infinite
TABLE-US-00006 TABLE 6 Surface number A4 A6 A8 A10 A12 A14 A16 A18
A20 S1 1.3012E-01 -8.0987E-02 3.8109E-02 -1.3056E-02 3.1510E-03
-5.1958E-04 5.5681E-05 -3.4983E-06 9.7820E-08 S2 1.9314E-01
-5.7432E-02 -4.8803E-02 8.6039E-02 -6.0046E-02 2.1585E-02
-4.0408E-03 3.4764E-04 -8.1663E-06 S3 -2.5772E-02 -6.4290E-02
-7.1817E-02 3.0667E-01 -8.2080E-01 1.5218E+00 -1.5629E+00
8.2440E-01 -1.7705E-01 S4 -8.4237E-03 -9.0557E-02 3.6980E-01
-1.7749E+00 5.4959E+00 -9.6031E+00 9.7700E+00 -5.3930E+00
1.2625E+00 S5 1.2524E-02 -7.5135E-02 4.9477E-01 -2.6858E+00
8.3389E+00 -1.5752E+01 1.6162E+01 -7.1221E+00 0.0000E+00 S6
-1.0862E-01 6.3407E-02 -5.2481E-01 2.3355E+00 -7.5385E+00
1.5391E+01 -1.9128E+01 1.3129E+01 -3.8501E+00 S7 -3.5740E-01
2.6768E-01 -7.3639E-01 1.4896E+00 -2.4697E+00 2.6459E+00
-1.6426E+00 4.5163E-01 0.0000E+00 S8 -2.0705E-01 1.5734E-01
-7.1752E-02 -1.1537E-02 3.6282E-02 -2.1680E-02 6.7054E-03
-8.9363E-04 0.0000E+00 S9 -2.0820E-02 -1.1254E-01 3.1782E-01
-4.0174E-01 2.9842E-01 -1.3886E-01 3.9994E-02 -6.5262E-03
4.6117E-04 S10 1.9000E-01 -2.7982E-01 2.3708E-01 -1.4093E-01
5.8221E-02 -1.5568E-02 2.4779E-03 -2.0305E-04 5.9167E-06 S11
1.9342E-02 -6.6597E-02 3.8322E-02 -1.1456E-02 1.8702E-03
-1.4101E-04 -1.6950E-06 1.0244E-06 -5.0069E-08 S12 -2.4451E-02
-6.1768E-03 5.5996E-03 -1.7361E-03 3.0329E-04 -3.2654E-05
2.1572E-06 -8.0439E-08 1.2969E-09
[0083] FIG. 6A illustrates longitudinal aberration curves of the
camera lens group according to example 3, representing the
deviations of focal points converged by light of different
wavelengths after passing through the lens group. FIG. 6B
illustrates a lateral color curve of the camera lens group
according to example 3, representing the deviations of different
image heights on an imaging plane after light passes through the
lens group. FIG. 6C illustrates astigmatic curves of the camera
lens group according to example 3, representing the curvatures of a
tangential plane and the curvatures of a sagittal plane. FIG. 6D
illustrates a distortion curve of the camera lens group according
to example 3, representing the amounts of distortion corresponding
to different image heights. It can be seen from FIG. 6A to FIG. 6D
that the camera lens group provided in example 3 may achieve good
image quality.
EXAMPLE 4
[0084] A camera lens group according to example 4 of the present
disclosure is described below with reference to FIG. 7 to FIG. 8D.
FIG. 7 shows a schematic structural view of the camera lens group
according to example 4 of the present disclosure.
[0085] As shown in FIG. 7, the camera lens group includes a first
lens E1, a second lens E2, a stop STO, a third lens E3, a fourth
lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7,
which are sequentially arranged from an object side to an image
side along an optical axis.
[0086] The first lens E1 has negative refractive power, an
object-side surface S1 thereof is concave, and an image-side
surface S2 thereof is concave. The second lens E2 has negative
refractive power, an object-side surface S3 thereof is convex, and
an image-side surface S4 thereof is concave. The third lens E3 has
positive refractive power, an object-side surface S5 thereof is
convex, and an image-side surface S6 thereof is convex. The fourth
lens E4 has negative refractive power, an object-side surface S7
thereof is convex, and an image-side surface S8 thereof is concave.
The fifth lens E5 has positive refractive power, an object-side
surface S9 thereof is convex, and an image-side surface S10 thereof
is convex. The sixth lens E6 has negative refractive power, an
object-side surface S 11 thereof is convex, and an image-side
surface S12 thereof is concave. The optical filter E7 has an
object-side surface S13 and an image-side surface S14. The camera
lens group has an imaging plane S15, and light from an object
sequentially passes through the respective surfaces S1 to S14 and
is finally imaged on the imaging plane S15.
[0087] In example 4, a total effective focal length f of the camera
lens group is 2.71 mm, an aperture number Fno of the camera lens
group is 2.46, a distance TTL along the optical axis from the
object-side surface S1 of the first lens E1 to the imaging plane
S15 is 6.68 mm, half of a diagonal length ImgH of an effective
pixel area on the imaging plane S15 is 4.20 mm, and half of a
maximum field-of-view Semi-FOV is 57.2.degree..
[0088] Table 7 is a table illustrating basic parameters of the
camera lens group of example 4, wherein the units for the radius of
curvature, the thickness/distance and the focal length are
millimeter (mm). Table 8 shows high-order coefficients applicable
to each aspheric surface in example 4, wherein the surface shape of
each aspheric surface may be defined by the formula (1) given in
the above example 1.
TABLE-US-00007 TABLE 7 Material Surface Surface Radius of
Thickness/ Refractive Abbe Focal Conic number type curvature
Distance index number length coefficient OBJ Spherical Infinite
Infinite S1 Aspheric -5.9204 0.3378 1.55 56.1 -6.59 -76.1845 S2
Aspheric 9.3662 0.5896 -1.0000 S3 Aspheric 4.5425 0.2800 1.62 25.9
-45.38 -5.4768 S4 Aspheric 3.8183 0.1627 -5.7539 STO Spherical
Infinite 0.0050 S5 Aspheric 3.6125 0.7184 1.55 56.1 2.73 -1.6890 S6
Aspheric -2.3568 0.4725 -1.8279 S7 Aspheric 10.7415 0.2800 1.67
19.2 -6.57 72.3558 S8 Aspheric 3.1136 0.3344 -5.9652 S9 Aspheric
89.4532 1.4829 1.55 56.1 1.78 90.0000 S10 Aspheric -0.9758 0.0498
-1.4180 S11 Aspheric 1.9349 0.5111 1.65 21.5 -2.17 -10.9862 S12
Aspheric 0.7346 0.6974 -3.5148 S13 Spherical Infinite 0.2100 1.52
64.2 S14 Spherical Infinite 0.5442 S15 Spherical Infinite
TABLE-US-00008 TABLE 8 Surface number A4 A6 A8 A10 A12 A14 A16 A18
A20 S1 1.4619E-01 -1.0364E-01 7.0094E-02 -3.7689E-02 1.5038E-02
-4.2482E-03 7.9168E-04 -8.6599E-05 4.1929E-06 S2 2.2710E-01
-1.6890E-01 1.7245E-01 -1.7874E-01 1.5480E-01 -9.6421E-02
3.6695E-02 -7.4920E-03 6.3047E-04 S3 -4.5580E-02 -4.8440E-02
4.9263E-03 7.0676E-02 -1.6361E-01 2.9428E-01 -2.9489E-01 1.4564E-01
-2.8085E-02 S4 -1.0932E-02 -9.1237E-02 5.8510E-01 -2.8092E+00
9.1238E+00 -1.7961E+01 2.1462E+01 -1.4355E+01 4.1561E+00 S5
-1.9746E-03 -2.1388E-02 -1.1649E-02 1.6906E-01 -6.8291E-01
1.2001E+00 -1.0028E+00 3.1082E-01 0.0000E+00 S6 -9.4074E-02
6.9089E-02 -4.0426E-01 1.3868E+00 -3.3265E+00 5.1586E+00
-4.9309E+00 2.6346E+00 -6.0481E-01 S7 -2.6115E-01 2.3995E-01
-3.5718E-01 2.6606E-01 2.4716E-02 -2.2479E-01 1.6561E-01
-3.9330E-02 0.0000E+00 S8 -2.1685E-01 2.8124E-01 -3.3936E-01
3.0723E-01 -1.8638E-01 7.1158E-02 -1.5333E-02 1.4162E-03 0.0000E+00
S9 -4.9669E-02 1.0661E-02 5.9077E-03 1.0533E-02 -2.6177E-02
2.1918E-02 -9.3194E-03 2.0341E-03 -1.8253E-04 S10 1.7217E-01
-2.9411E-01 3.2922E-01 -2.7241E-01 1.5885E-01 -6.1881E-02
1.5136E-02 -2.0758E-03 1.2056E-04 S11 -6.0372E-02 -3.8801E-04
7.7830E-03 -1.8910E-03 -4.4640E-04 3.1058E-04 -6.5124E-05
6.3483E-06 -2.4478E-07 S12 -6.2282E-02 2.0941E-02 -4.8466E-03
7.6300E-04 -8.5178E-05 6.9286E-06 -4.0655E-07 1.5534E-08
-2.8422E-10
[0089] FIG. 8A illustrates longitudinal aberration curves of the
camera lens group according to example 4, representing the
deviations of focal points converged by light of different
wavelengths after passing through the lens group. FIG. 8B
illustrates a lateral color curve of the camera lens group
according to example 4, representing the deviations of different
image heights on an imaging plane after light passes through the
lens group. FIG. 8C illustrates astigmatic curves of the camera
lens group according to example 4, representing the curvatures of a
tangential plane and the curvatures of a sagittal plane. FIG. 8D
illustrates a distortion curve of the camera lens group according
to example 4, representing the amounts of distortion corresponding
to different image heights. It can be seen from FIG. 8A to FIG. 8D
that the camera lens group provided in example 4 may achieve good
image quality.
EXAMPLE 5
[0090] A camera lens group according to example 5 of the present
disclosure is described below with reference to FIG. 9 to FIG. 10D.
FIG. 9 shows a schematic structural view of the camera lens group
according to example 5 of the present disclosure.
[0091] As shown in FIG. 9, the camera lens group includes a first
lens E1, a second lens E2, a stop STO, a third lens E3, a fourth
lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7,
which are sequentially arranged from an object side to an image
side along an optical axis.
[0092] The first lens E1 has negative refractive power, an
object-side surface S1 thereof is concave, and an image-side
surface S2 thereof is concave. The second lens E2 has positive
refractive power, an object-side surface S3 thereof is convex, and
an image-side surface S4 thereof is concave. The third lens E3 has
positive refractive power, an object-side surface S5 thereof is
convex, and an image-side surface S6 thereof is convex. The fourth
lens E4 has positive refractive power, an object-side surface S7
thereof is convex, and an image-side surface S8 thereof is concave.
The fifth lens E5 has positive refractive power, an object-side
surface S9 thereof is convex, and an image-side surface S10 thereof
is convex. The sixth lens E6 has negative refractive power, an
object-side surface S 11 thereof is convex, and an image-side
surface S12 thereof is concave. The optical filter E7 has an
object-side surface S13 and an image-side surface S14. The camera
lens group has an imaging plane S15, and light from an object
sequentially passes through the respective surfaces S1 to S14 and
is finally imaged on the imaging plane S15.
[0093] In example 5, a total effective focal length f of the camera
lens group is 2.41 mm, an aperture number Fno of the camera lens
group is 2.26, a distance TTL along the optical axis from the
object-side surface S1 of the first lens E1 to the imaging plane
S15 is 6.65 mm, half of a diagonal length ImgH of an effective
pixel area on the imaging plane S15 is 4.20 mm, and half of a
maximum field-of-view Semi-FOV is 65.1.degree..
[0094] Table 9 is a table illustrating basic parameters of the
camera lens group of example 5, wherein the units for the radius of
curvature, the thickness/distance and the focal length are
millimeter (mm). Table 10 shows high-order coefficients applicable
to each aspheric surface in example 5, wherein the surface shape of
each aspheric surface may be defined by the formula (1) given in
the above example 1.
TABLE-US-00009 TABLE 9 Material Surface Surface Radius of
Thickness/ Refractive Abbe Focal Conic number type curvature
Distance index number length coefficient OBJ Spherical Infinite
Infinite S1 Aspheric -5.9809 0.3969 1.55 56.1 -4.38 -74.2415 S2
Aspheric 4.0826 0.8465 -1.0000 S3 Aspheric 2.5420 0.2800 1.62 25.9
8.02 -4.0021 S4 Aspheric 4.9853 0.1429 -3.1240 STO Spherical
Infinite 0.1032 S5 Aspheric 4.6734 0.8557 1.55 56.1 4.21 8.7942 S6
Aspheric -4.2393 0.1672 6.0962 S7 Aspheric 6.6511 0.2800 1.67 19.2
351.94 34.5162 S8 Aspheric 6.7256 0.3076 2.4655 S9 Aspheric 19.2468
1.4208 1.55 56.1 1.95 77.0936 S10 Aspheric -1.0992 0.0300 -1.4594
S11 Aspheric 4.0268 0.6087 1.65 21.5 -1.92 -90.0000 S12 Aspheric
0.9012 0.5701 -4.9276 S13 Spherical Infinite 0.2100 1.52 64.2 S14
Spherical Infinite 0.4300 S15 Spherical Infinite
TABLE-US-00010 TABLE 10 Surface number A4 A6 A8 A10 A12 A14 A16 A18
A20 S1 1.2512E-01 -7.4990E-02 3.5399E-02 -1.2032E-02 2.8094E-03
-4.3669E-04 4.2911E-05 -2.3987E-06 5.7748E-08 S2 1.8974E-01
-4.8046E-02 -7.9711E-02 1.4294E-01 -1.1271E-01 4.8125E-02
-1.1522E-02 1.4633E-03 -7.7097E-05 S3 -1.5442E-02 8.3513E-03
-4.3456E-01 1.3439E+00 -2.6402E+00 3.3485E+00 -2.5001E+00
9.9575E-01 -1.6409E-01 S4 1.2611E-02 -2.1084E-01 1.1798E+00
-5.4075E+00 1.5927E+01 -2.9059E+01 3.2403E+01 -2.0109E+01
5.2927E+00 S5 1.1194E-02 -5.8032E-02 3.9031E-01 -1.5392E+00
3.4335E+00 -4.3925E+00 2.9103E+00 -7.5572E-01 0.0000E+00 S6
-1.6363E-01 -9.9889E-02 3.8960E-01 -7.2639E-01 6.8080E-01
-1.3599E-01 -2.9581E-01 2.3336E-01 -5.0040E-02 S7 -2.1284E-01
-1.7339E-01 5.0566E-02 4.0602E-01 -1.0070E+00 1.0867E+00
-5.9390E-01 1.3629E-01 0.0000E+00 S8 -3.9623E-02 -2.1661E-01
3.2144E-01 -2.2153E-01 6.3235E-02 1.0304E-02 -1.0805E-02 1.9989E-03
0.0000E+00 S9 1.0603E-02 -6.0782E-02 3.5363E-02 3.4181E-02
-6.1975E-02 4.0473E-02 -1.4235E-02 2.6718E-03 -2.0858E-04 S10
1.6961E-01 -2.4194E-01 2.1619E-01 -1.4310E-01 7.0459E-02
-2.3307E-02 4.6968E-03 -5.1546E-04 2.3674E-05 S11 -8.5479E-02
-2.1372E-02 1.8119E-02 2.4469E-03 -4.8657E-03 1.6961E-03
-2.8267E-04 2.4118E-05 -8.6326E-07 S12 -7.1137E-02 2.7388E-02
-8.1394E-03 1.8765E-03 -3.2354E-04 3.8315E-05 -2.8658E-06
1.2082E-07 -2.1839E-09
[0095] FIG. 10A illustrates longitudinal aberration curves of the
camera lens group according to example 5, representing the
deviations of focal points converged by light of different
wavelengths after passing through the lens group. FIG. 10B
illustrates a lateral color curve of the camera lens group
according to example 5, representing the deviations of different
image heights on an imaging plane after light passes through the
lens group. FIG. 10C illustrates astigmatic curves of the camera
lens group according to example 5, representing the curvatures of a
tangential plane and the curvatures of a sagittal plane. FIG. 10D
illustrates a distortion curve of the camera lens group according
to example 5, representing the amounts of distortion corresponding
to different image heights. It can be seen from FIG. 10A to FIG.
10D that the camera lens group provided in example 5 may achieve
good image quality.
EXAMPLE 6
[0096] A camera lens group according to example 6 of the present
disclosure is described below with reference to FIG. 11 to FIG.
12D. FIG. 11 shows a schematic structural view of the camera lens
group according to example 6 of the present disclosure.
[0097] As shown in FIG. 11, the camera lens group includes a first
lens E1, a second lens E2, a stop STO, a third lens E3, a fourth
lens E4, a fifth lens E5, a sixth lens E6 and an optical filter E7,
which are sequentially arranged from an object side to an image
side along an optical axis.
[0098] The first lens E1 has negative refractive power, an
object-side surface S1 thereof is concave, and an image-side
surface S2 thereof is concave. The second lens E2 has positive
refractive power, an object-side surface S3 thereof is convex, and
an image-side surface S4 thereof is concave. The third lens E3 has
positive refractive power, an object-side surface S5 thereof is
convex, and an image-side surface S6 thereof is convex. The fourth
lens E4 has negative refractive power, an object-side surface S7
thereof is concave, and an image-side surface S8 thereof is convex.
The fifth lens E5 has positive refractive power, an object-side
surface S9 thereof is concave, and an image-side surface S10
thereof is convex. The sixth lens E6 has negative refractive power,
an object-side surface S 11 thereof is convex, and an image-side
surface S12 thereof is concave. The optical filter E7 has an
object-side surface S13 and an image-side surface S14. The camera
lens group has an imaging plane S15, and light from an object
sequentially passes through the respective surfaces S1 to S14 and
is finally imaged on the imaging plane S15.
[0099] In example 6, a total effective focal length f of the camera
lens group is 2.38 mm, an aperture number Fno of the camera lens
group is 2.30, an on-axis distance TTL from the object-side surface
S1 of the first lens E1 to the imaging plane S15 is 6.34 mm, half
of a diagonal length ImgH of an effective pixel area on the imaging
plane S15 is 4.20 mm, and half of a maximum field-of-view Semi-FOV
is 64.1.degree..
[0100] Table 11 is a table illustrating basic parameters of the
camera lens group of example 6, wherein the units for the radius of
curvature, the thickness/distance and the focal length are
millimeter (mm). Table 12 shows high-order coefficients applicable
to each aspheric surface in example 6, wherein the surface shape of
each aspheric surface may be defined by the formula (1) given in
the above example 1.
TABLE-US-00011 TABLE 11 Material Surface Surface Radius of
Thickness/ Refractive Abbe Focal Conic number type curvature
Distance index number length coefficient OBJ Spherical Infinite
Infinite S1 Aspheric -5.7350 0.3503 1.55 56.1 -5.09 -79.1625 S2
Aspheric 5.5009 0.7447 -1.0000 S3 Aspheric 2.4892 0.2800 1.62 25.9
6.81 -6.6810 S4 Aspheric 5.8102 0.1432 -54.7003 STO Spherical
Infinite 0.0240 S5 Aspheric 5.4094 0.6510 1.55 56.1 3.62 4.0074 S6
Aspheric -2.9782 0.3257 2.1687 S7 Aspheric -6.7670 0.2800 1.67 19.2
-10.72 48.0143 S8 Aspheric -101.1367 0.1000 62.9164 S9 Aspheric
-3.5453 1.4015 1.55 56.1 1.80 -45.6243 S10 Aspheric -0.8780 0.0300
-1.4108 S11 Aspheric 1.9305 0.5611 1.65 21.5 -2.34 -19.4045 S12
Aspheric 0.7561 0.6902 -4.5875 S13 Spherical Infinite 0.2100 1.52
64.2 S14 Spherical Infinite 0.5525 S15 Spherical Infinite
TABLE-US-00012 TABLE 12 Surface number A4 A6 A8 A10 A12 A14 A16 A18
A20 S1 1.3578E-01 -8.7228E-02 4.3936E-02 -1.6053E-02 4.0996E-03
-7.1376E-04 8.1074E-05 -5.4637E-06 1.6683E-07 S2 2.0684E-01
-8.6779E-02 -3.4474E-02 1.0101E-01 -8.5789E-02 3.7450E-02
-9.0387E-03 1.1519E-03 -6.0811E-05 S3 -6.0098E-03 -1.0697E-01
2.6831E-02 -1.3394E-01 1.8653E-01 1.3955E-01 -3.5380E-01 2.1322E-01
-4.3895E-02 S4 -1.7634E-03 -8.1511E-02 -3.1133E-02 5.0721E-02
4.2187E-01 -7.2691E-01 3.5474E-01 1.2368E-01 -1.1557E-01 S5
1.1629E-02 -1.2612E-01 1.5340E+00 -1.0738E+01 4.1960E+01
-9.3976E+01 1.1138E+02 -5.4390E+01 0.0000E+00 S6 -9.1341E-02
-1.4341E-01 5.7408E-01 -2.1423E+00 4.5950E+00 -5.7586E+00
3.2301E+00 1.9033E-01 -7.5345E-01 S7 -1.7193E-01 -3.7559E-01
4.1550E-01 1.4042E+00 -7.0819E+00 1.2712E+01 -1.0874E+01 3.6811E+00
0.0000E+00 S8 8.2106E-02 -7.6033E-01 1.7627E+00 -2.4324E+00
2.1361E+00 -1.1615E+00 3.5540E-01 -4.6470E-02 0.0000E+00 S9
9.0702E-02 -4.2168E-01 8.0917E-01 -7.9730E-01 3.5365E-01 3.0870E-02
-1.0651E-01 4.3779E-02 -6.0469E-03 S10 1.6743E-01 -2.4930E-01
2.2289E-01 -1.5740E-01 8.8835E-02 -3.5906E-02 9.4272E-03
-1.4317E-03 9.5349E-05 S11 3.1184E-02 -6.5068E-02 3.9905E-02
-1.4321E-02 3.2814E-03 -4.8700E-04 4.5451E-05 -2.4271E-06
5.6537E-08 S12 -1.9042E-02 -3.7221E-03 3.4707E-03 -1.0738E-03
1.8736E-04 -2.0042E-05 1.3014E-06 -4.7070E-08 7.2662E-10
[0101] FIG. 12A illustrates longitudinal aberration curves of the
camera lens group according to example 6, representing the
deviations of focal points converged by light of different
wavelengths after passing through the lens group. FIG. 12B
illustrates a lateral color curve of the camera lens group
according to example 6, representing the deviations of different
image heights on an imaging plane after light passes through the
lens group. FIG. 12C illustrates astigmatic curves of the camera
lens group according to example 6, representing the curvatures of a
tangential plane and the curvatures of a sagittal plane. FIG. 12D
illustrates a distortion curve of the camera lens group according
to example 6, representing the amounts of distortion corresponding
to different image heights. It can be seen from FIG. 12A to FIG.
12D that the camera lens group provided in example 6 may achieve
good image quality.
[0102] In view of the above, examples 1 to 6 respectively satisfy
the relationship shown in Table 13.
TABLE-US-00013 TABLE 13 Conditional/Example 1 2 3 4 5 6
tan.sup.2(Semi-FOV)*ImgH 22.17 21.18 23.07 10.08 19.56 17.81
TTL/ImgH 1.50 1.58 1.61 1.59 1.58 1.51 f1/f6 1.99 1.84 1.85 3.04
2.29 2.18 f34/BFL 5.55 5.75 4.34 2.60 3.39 3.53 R11/R12 2.32 2.37
2.54 2.63 4.47 2.55 R2/R3 1.76 1.47 1.19 2.06 1.61 2.21 CT5/T56
49.36 52.90 54.78 29.75 47.36 46.72 (CT3 + CT1)/(CT3 - CT1) 3.66
3.44 3.21 2.78 2.73 3.33 (SAG41 + SAG42)/(SAG41 - SAG42) 1.97 1.86
1.54 0.79 1.85 2.47 (DT61 + DT62)/(DT62 - DT61) 9.32 7.67 6.77 6.35
4.93 8.61 ET6/ET2 3.78 4.09 4.22 3.29 5.48 4.04 Maximum Distortion
-2.93% -2.71% -3.25% -1.80% -1.80% -2.40%
[0103] The present disclosure further provides an imaging
apparatus, which is provided with an electronic photosensitive
element for imaging. The electronic photosensitive element may be a
photosensitive Charge-Coupled Device (CCD) or a Complementary
Metal-Oxide Semiconductor (CMOS). The imaging apparatus may be an
independent imaging device such as a digital camera, or may be an
imaging module integrated in a mobile electronic device such as a
mobile phone. The imaging apparatus is equipped with the camera
lens group described above.
[0104] The foregoing is only a description of the preferred
examples of the present disclosure and the applied technical
principles. It should be appreciated by those skilled in the art
that the protective scope of the present disclosure is not limited
to the technical solutions formed by the particular combinations of
the above technical features. The protective scope should also
cover other technical solutions formed by any combinations of the
above technical features or equivalent features thereof without
departing from the concept of the present disclosure, such as,
technical solutions formed by replacing the features as disclosed
in the present disclosure with (but not limited to), technical
features with similar functions.
* * * * *